What is Weight Capacity of Lock N Roll Coupler part # 336TS504

Updated 08/25/2025 | Published 01/12/2022

Question:

Sir, From what I can tell, all of the stress of towing is placed on a single bolt located on both the tow vehicle and the trailer hitch ? What material is this bolt? And with the hitch component able to swing, how is this bolt secured from coming out? A single lock nut? In addition, how is this system for long haul towing down the interstate compared to the standard using a ball? Also backing up straight up a driveway? Will the axle turn or winder more making it more difficult to back straight? Thanks

asked by: Mark C

Helpful Expert Reply:

The pivoting bolt or pin that the Lock N Roll Coupler part # 336TS504 has is made from a hardened steel that as rigorously tested for capacity and found to be capable of handling up to 11,000 lbs of trailer weight and also meets SAE J684 towing safety regulations. A standard hitch ball uses a similar "bolt" if you will as the threaded portion of the ball that fits into the ball mount hole is a very similar concept.

expert reply by: Jameson C

8/23/2025

Lock N Roll Articulating Coupler Jameson, I bought the other version yrs ago from you... the two inch square. I added it to a 8 feet small 2000 lbs type of offroad trailer I built and still have with roof tent and it has been very good throughout the years, not affecting my truck when going through uneven road and alike. As I already have one side I thought I could put this version on my recently 2010 Rpo-177 around 4000 lbs but now 18 feet long (probably at least 10 feet high), and use either one with the same system. How do you think it will do with the wind, now more than double the size, because the trailer goes in the back free and happy?

Jameson C.

8/25/2025

@Al It'll do just fine. It wouldn't be any worse in wind in terms of sway if that's what you're concerned about when compared to a standard coupler setup.